With the development of science and technology ,it is common that middle school students carry MP3 or MP4 to school. Of course,there are some advantages, first these electronic products can make the students relaxed if they are tired .Second students also can use them to listen to English .Finally these electronic products can make our life lively. However, there are also some disadvantages .
The students who spend too much time on them will fall behind others on their study. What's worse , listening to them too long time will surely affect students' hearing ability.So students should make proper use of them .
追问谢谢 ，但是 和 主题有些偏差。